My antivirus just detected six file that it thinks is malware. The files are all MHT files and have been identified with "suspicious.cloud.3". I haven't done anything about it yet, because those files have been on my computer since 2017 and have gone through many weekly thorough scans without being tagged. I downloaded the free version of Malwarebytes and started to run it but noticed that it will "clean" those files so I chickened out until I know more about the problem.

Is "suspicious.cloud.3" malware or did my antivirus detect a false positive?